CVE-2022-48670

Kernel memory corruption via repeated device uninitialization

Published May 3, 2024 · Updated Aug 12, 2026

Use-after-free in the Linux kernel PECI CPU driver 5.18 through 5.19.9 allows local users to corrupt kernel memory. When auxiliary_device_add() fails, cleanup triggers adev_release(), which incorrectly calls auxiliary_device_uninit() again after the device reference was already released. Exploitation requires local low-privileged access and the auxiliary-device registration failure path; public records do not establish attacker control of that failure.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux kernel PECI CPU driver 5.18 through 5.19.9 allows local users to corrupt kernel memory. When auxiliary_device_add() fails, cleanup triggers adev_release(), which incorrectly calls auxiliary_device_uninit() again after the device reference was already released. Exploitation requires local low-privileged access and the auxiliary-device registration failure path; public records do not establish attacker control of that failure.

The record

CVE
CVE-2022-48670
Published
May 3, 2024
Updated
Aug 12, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.18
  2. Affected versionversion=93e1821c80f9460c8931dc4bc090ede794f966cd <1c11289b34ab67ed080bbe0f1855c4938362d9cf
  3. Affected versionversion=93e1821c80f9460c8931dc4bc090ede794f966cd <c87f1f99e26ea4ae08cabe753ae98e5626bdba89

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=93e1821c80f9460c8931dc4bc090ede794f966cd <1c11289b34ab67ed080bbe0f1855c4938362d9cf; version=93e1821c80f9460c8931dc4bc090ede794f966cd <c87f1f99e26ea4ae08cabe753ae98e5626bdba89
The Linux Kernel Organization · Linux Kernelversion=-1da177e4c3f4

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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